I already have 0.6 BTC, now I want to increase them, so what do I do? Leave them or enclose them somewhere?
Dude, do not do day trade, do this:
1 -) buy Hardware wallets, buy this https://www.ledgerwallet.com/products ( see videos on youtube how it works and search google how Hardware wallets work )
2 - ) transfer all your bitcoin to your Hardware wallets and save your private keys well, you can also search about private keys on youtube and google
3 - ) hold your bitcoin for many year that you can double your profit or even triple your profit. for example, today the price of bitcoin and $7000 and if the price of bitcoin is $21000 then you made 3x of your investment.
PS: Do not do day trading, do not be ambitious thinking that you will increase your bitcoins with sell and buy, you can lose all your bitcoin.
I will be very happy with your advice in PM.
Please do not be naive to believe in investment offers that promise fixed returns per day, do not fall for this scam, because surely many people will send you PM with these kind of offers.