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Portions of Mad Money were preempted by President Obama's Friday news conference from the nuclear summit.

Now that the Federal Reserve has taken itself out of the equation for awhile, Jim Cramer told his Mad Money viewers Friday it's once again safe to invest in high-quality stocks and be a buyer on market-induced weakness.

For example, Cramer said investors who've done their homework could have used the initial weakness after Friday's nonfarm payroll report to buy some Home Depot (HD) , AMN Healthcare (AHS) or Sysco (SYY) , all of which will be heading higher as our economy improves.

For this week's game plan, Cramer said he'll be waiting to hear the pre-order numbers from Tesla Motors (TSLA) on Monday, along with the latest durable goods numbers.

Then, on Tuesday, Cramer said to keep an eye on the analyst meetings at Nvidia (NVDA) and First Solar (FSLR) , along with earnings from Darden Restuarants (DRI) and Walgreen Boots Alliance (WBA) , a stock Cramer owns for his charitable trust, Action Alerts PLUS.

Wednesday brings earnings from Constellation Brands (SZ) and Bed Bath & Beyond (BBBY) , but Cramer advised waiting for a pullback before buying.

Next, on Thursday, it's earnings from ConAgra Foods (CAG) , Carmax (KMX) and Rite Aid (RAD) . Cramer said he's cautious on ConAgra and Carmax but is more bullish on Rite Aid.

Finally, on Friday, it's the shareholder meeting at Marriott (MAR) and Cramer said he wants to hear the latest on the Starwood Hotels (HOT) takeover bid.

Cramer's Homework

In his "Homework" segment, Cramer followed up on some of the stocks that stumped him during earlier shows. He said LPL Financial (LPLA) , a stock that's down 41% for the year, is not an appealing story, even with shares trading less than 10 times earnings with a 4% yield.

Cramer said that 2U (TWOU) , a cloud software provider for colleges, seems appealing with 36% revenue growth. But 2U is still far from profitable and Cramer said he cannot bless it until the market once again has an appetite for growth stocks.

Alarm.com (ALRM) was next on Cramer's list. He said this Internet of Things company was a previous buy recommendation, but with shares now trading for 45 times earnings, he's taking a pass until shares pull back to more reasonable levels.

Finally, Cramer said that RingCentral (RNG) , a business communications company, seems cheap now that shares are down 32% for the year, but with increased competition from AT&T (T) , he's sticking with his favorite cloud companies, Salesforce.com (CRM) and Adobe Systems (ADBE) .

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At the time of publication, Cramer's Action Alerts PLUS had a position in WBA.