If you want to invest then first you need a way to buy crypto. There are multiple ways you can go to an exchange register and buy from them. I will not recommend any exchange do your research but also be careful there are scam exhanges as well. Register in a trustworthy one.

Also you can buy locally, you may join a social media group and try to buy from a reputable seller.

There also wensites that sells coins same as the first one buy from a trusted website.

After buying your coins you need to have a plan. Are you here to invest for short term, long term or trading.

Just a reminder on all investment there are always risk.
Good luck!

In fact, 700 dollars is completely investable. You need to learn the knowledge of blockchain, understand the characteristics of each token, select the token you want to invest in, and you can invest in BTC or invest in ICO.

$ 700 I think you should invest in ICO projects. But before you invest, go to the press, the youtube channel. Learn how to analyze potential ICO projects. You invest in them. I think if you choose the right potential ICO project, within 1-2 months you can multiply your capital by 2 or 3 times. But I also say that the ICO market is a risky market. A lot of frauds, you be careful.

With this amount you can invest in bitcoin and keep it for a long time. Pick some promising alternative coins that have price below 1$ and invest.

Starting amount is fine. You are much better off picking 1 coin and investing in it, and then adding to that position with a carefully constructed savings plan. The exact same approach should be taken if you invest in the equity markets. Don't stop at the 700...keep saving and keep investing. The effects of compound interest over long period of time (decades) is what generates wealth

$700 is a pretty good amount to start, just get some Bitcoin with your $700 and start enjoying the Bitcoin life practically. This $700 investment will grow (you will find more ways to get more Bitcoin eventually) and give you good money.

You can do some research in altcoins. With this amount, you'll certainly find coins with great potential for future profits like neo, iota or eth. If you earn, you can buy more by increasing your capital.

700 USD is comparatively very small amount in crypto space   It might actually depend upon how much money other have injected in their crypto portfolio.

Just invest what you can afford to loss so if 700 USD is big amount for you than I suggest you to not invest all of it in crypto or atleast divide your investment in multiple crypto.

If 700USD is a big money for you better not invest it all, but if 700USD is just small amount for you better to invest it in strong and popular cryptotoken, and better do some research about the token do want to invest to avoid losses.