If you will invest i would recommend you to invest to altcoin which is specially in Top100 list on coinmarketcap. Never invest to a coin which has low trading volüme, it would be suicade. Also you need to check its buy/sell price and there shouldn't be too much differences between two prices. Also you must follow the projects milestones, you could find the right time to invest if you check it.
You have that man, and surely you will be guided accordingly. But not just to be confident enough even you choice the best coins cause we all know how the market behaves at this time. We need to be at the right timing in buying cause that's the only way we could generate profits. We cant be able to but it now at cheap price cause we are in the rising trend, not unless we wait for another drop( which is a waste of time).