In other words, buy low and sell high via an exchange using limit orders, dollar cost average, set stops if you aren’t in front of a computer, ladder buy and sell orders, use TA, manage risk, preserve capital, watch out for scams, know the tax implications, and consider being conservative in general and not spending your life savings on digital assets.
Always pay attention to Bitcoin. Most altcoins (every cryptocurrency except Bitcoin) are pegged more closely to Bitcoin than Asian currencies were to the USD during the Asian Financial Crisis. If Bitcoin price pump drastically, altcoins price can go down as people try to exit altcoins to ride the BTC profits; inversely, if Bitcoin prices dump drastically, altcoin prices can go down, too, as people exit altcoins to exchange back into fiat. The best times for altcoin growth appear when Bitcoin shows organic growth or decline, or remains stagnant in price.