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Oil is back in control of the stock market, Jim Cramer told his Mad Money viewers Friday, but that's a good thing because investors can use oil-inspired weakness to buy their favorite stocks.

Cramer said his game plan started this weekend at the much-hyped Doha oil meeting. He didn't expect anything to come from the gathering, and no deal was reached. But the weakness that is creating in stocks will be much appreciated during the middle of earnings season.

On Monday, Cramer will be watching PepsiCo (PEP - Get Report) , a stock he owns for his charitable trust, Action Alerts PLUS. He'll also be watching IBM (IBM - Get Report) and Netflix (NFLX - Get Report) . He suggested buying PepsiCo, but is wary of IBM and Netflix, which have run up in anticipation of earnings.

PepsiCo is a holding in Jim Cramer's Action Alerts PLUS Charitable Trust Portfolio. Want to be alerted before Cramer buys or sells PEP? Learn more now.

Next, on Tuesday, it's Johnson & Johnson (JNJ - Get Report) , a Cramer fave, along with Goldman Sachs (GS - Get Report) , which could be getting better, and Intel (INTC - Get Report) and Yahoo! (YHOO) , two stocks Cramer advised skipping this quarter.

Wednesday brings earnings from three stocks Cramer likes: Coca-Cola (KO - Get Report) , Illinois Tool Works (ITW - Get Report) and Yum Brands! (YUM - Get Report) .

Thursday and Friday are both big earnings days. For Thursday, Cramer is bullish on Alphabet (GOOGL - Get Report) , Starbucks (SBUX - Get Report) , Schlumberger (SLB - Get Report) and Visa (V - Get Report) , all four of which are Action Alerts PLUS holdings. He is also a fan of Under Armour (UA - Get Report) and Microsoft (MSFT - Get Report) .

For Friday, the bulls continue with American Airlines (AAL) , General Electric (GE - Get Report) , also a member of Action Alerts PLUS, Honeywell (HON - Get Report) , Kimberly-Clark (KMB - Get Report) and, last but not least, McDonald's (MCD - Get Report) .

Focus on Data Center REITs

There are two macro trends that are continuing to gain steam, Cramer told viewers: big data and cloud computing. What do they both have in common? They need data centers to survive. That's why Cramer took at a look at two data center real estate investment trusts, Equinix (EQIX - Get Report) and CoreSite Realty (COR - Get Report) .

Equinix is the larger of the two, with 145 centers in 40 markets on five continents. CoreSite operates just 17 centers in eight markets. Both companies have impressive stocks, with Equinix up 300% over the past five years and CoreSite up 350% since its initial public offering just over five years ago. Both stocks are also up 40% over the past 12 months and trade around 18.5 times earnings.

But Cramer said he's giving the edge to CoreSite. The company has better organic growth and trades as a slight discount to its larger rival. He also praised the company's 26% increase in its distribution over the past two years.

H&R Block vs. Intuit

April 18 is tax day in America, and Cramer celebrated by comparing our nation's two biggest tax preparers, H&R Block (HRB - Get Report) and Intuit (INTU - Get Report) , maker of TurboTax. These two companies represent the best of the best when it comes to bricks-and-mortar and online tax filing solutions.

But when comparing these two, Cramer said it's almost no contest. Intuit is a software company that is evolving into a cloud computing company, one that flourishes all year round thanks to its large install base of Quickbooks small business accounting software and payroll services. Meanwhile, H&R Block, after jettisoning its banking assets, is now largely only a seasonal play.

Shares of H&R Block trade at 12 times earnings, compared to 23 times earnings for Intuit. Cramer said given the company's bright future, he thinks Intuit deserves that premium, especially after the horrific quarter that H&R Block posted last month.

Off the Tape

In his "Off the Tape" segment, Cramer sat down with Avi Lele, co-founder and CEO of the privately held Stockpile, the fractional share brokerage that makes giving the gift of stocks as easy as giving a gift card.

Lele said the traditional way of buying stocks, especially as gifts for kids or family members, is far too cumbersome and costs too much. With Stockpile, you can buy a gift card at your local supermarket and purchase fractional shares for just 99 cents a trade.

Lele said that 20% of Stockpile's current account holders are kids and teens under the age of 18, a true testament to the power of this simpler way to invest.

Stockpile is now available online at or in 10,000 supermarkets and retail outlets across the country.


Lightning Round

In the Lightning Round, Cramer was bullish on Consolidated Edison (ED - Get Report) and Regeneron Pharmaceuticals (REGN - Get Report) .

Cramer was bearish on J.C. Penney (JCP - Get Report) , NCR  (NCR - Get Report) and SciClone Pharmaceuticals (SCLN) .

Mad Tweets

In the "Mad Tweets" segment, Cramer responded to questions sent via Twitter to @JimCramer. He said he prefers Taser International (TASR) over Smith & Wesson (SWHC) and would be a buyer of both Nike (NKE - Get Report) and Under Armour (UA - Get Report) , but only with a longer-term horizon given that apparel is weak.

When asked about Lululemon Athletica (LULU - Get Report) , Cramer said buy, buy, buy. When asked to choose between AT&T (T - Get Report) and Verizon (VZ - Get Report) , he chose Verizon.

To watch replays of Cramer's video segments, visit the Mad Money page on CNBC.

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At the time of publication, Cramer's Action Alerts PLUS had a position in GE, GOOGL, PEP, SLB and V.