$BTC Best time to buy? End of September .. period , do not do futures at all untill end of September if you ant to liqedate , only veteran traders can do scalping .

Rich people on a mission to liqedate you ,and they will every time you buy, BTC will hit way below before it touches 70 again , protect your wallets be patient wait for the right time,

as for alt coins if you really want to trade futures just go short max 5 cross , if you want to buy for a long times only spot Do not repeat so not fall into bulltrraps please, and do not trust painters who draw charts at all.