The platform offers you with good charting, trade history as well as functional order book where you can place orders on your preferred price. As your amount matches with an order of opposite matching, your order will automatically get partially or fully filled. Being a new market player, Gate.io currently allows you to register and create accounts for free. It also allows you minimum exchange fees, i.e. only 0.2%.
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.