DYOR is the most fundamental method of investing.
Is a must to have it in order to verify the market movement, if you work on it more deeper the knowledge that you'll going to gain will give you
good advantage from this business.
Also, if you can, don't be interested in pump dump coins, it will end up costing you.
Unless you are willing to take the risk, but while learning the market taking solid projects in your list is far better than playing with pump and dump assets.
always check the use case of a project to ensure that the project you are investing in is indeed worthy of being a source of profit.
This is very important plus make sure being updated to all the developments coming from the project legit administrators.