Here are some tricks if you are new to crypto world.
For me i found it good to use 3 part trading trick.
1. Suppose you have total budget of 900$, first thing is do proper research before you invest. Once your research is done , buy coin of worth 300$....
2. Now look into market, if you think you are in profit then book your profit and wait for dip, but if you are in loss then wait some more time for more dip and pick some more coins.
3. now if you see market dip more and more, then wait and wait for best time and buy for further 300$. By this way you can balance your high purchase with low purchase because at some moment it will pump if you think you invest in good project.
So 3 part trading is best thing.
If you are lucky then you will win otherwise it will be not a good idea. Yes, I respect which you are thinking but it's so tough to understand perfect bottom. sometimes you can lose your all investment by that way. I think we should invest more coins than only one coin.
Well mate for New users it is not good to apply more coins. First it is the most important step is to gain knowledge and skills and after that you should try multi coins. Traders should be very careful because its about skills and information. Learn the more and invest when you see price is low and you can.