No, advertisements or promotions claiming you can invest $5k and get $15k (or any huge returns) within an hour are likely scams and should be avoided. There are several red flags to watch out for:

• Claims of guaranteed high returns with no risk are unrealistic and unsustainable for any legitimate investment. If it sounds too good to be true, it usually is.
• Vague claims without much detail on the company, leadership team, investment product or method of generating returns are common. Lack of transparency is a big warning sign.
• High pressure tactics urging you to act fast before you miss out are used to get people to invest before properly evaluating the opportunity.

-Requested upfront payment via difficult to trace methods like gift cards, cryptocurrency or wire transfers indicates potential fraud.

• No regulatory information or registrations provided. Legitimate investment companies share licenses, certificates, registration numbers etc.
• Anonymous individuals reaching out directly via email or social media instead of official company channels.
• Claims of celebrity endorsements, huge profits for others etc. intended to manufacture FOMO or credibility. Hard to verify.
• Websites and materials look unprofessional, copied or quickly put together. Grammatical errors and inconsistent claims.

The best way to avoid scams is to research investment opportunities extensively, check registrations and certifications, review company leadership and operations, start small to test, and be wary of “too good to be true” claims. If something seems fishy, it’s best to avoid.

Here are some types of investments beginners should generally avoid when just starting out:

• Penny stocks – Ultra cheap stocks of small companies trading under $5 per share. Highly speculative and prone to manipulation.
• Over-the-counter stocks – Stocks that trade over-the-counter instead of on major exchanges. Lack oversight and transparency.
• Complex derivatives – Futures, options and other complex derivatives require extensive knowledge before investing. High leverage amplifies risks.
• Illiquid investments – Private equity, restricted shares, non-public companies. Cannot readily sell to exit position. Locks up capital.
• Commodities futures – Direct investment in commodity futures contracts requires deep understanding. Extreme volatility.
• High-fee funds – Actively managed mutual funds with high expense ratios and excessive fees reduce returns.
• Cryptocurrencies – Still an emerging area with high volatility and complexity. Need extensive knowledge.
• NFTs – Non-fungible tokens are highly speculative currently, lack transparency and regulation.
• Junk bonds – Bonds issued by companies with poor credit ratings carry excessive default risk.
• Foreign developing markets – Foreign emerging and frontier stocks add political, currency risk on top of investment risk.

Beginners are better off starting with building a core portfolio of low-cost, diversified ETFs, blue-chip stocks, investment-grade short-term bonds and open-end mutual funds focused on major asset classes. Learning the basics before venturing into more complex assets.