Online-Wallets are the simplest way to acces the Burstcoin network. You don´t need to install any software only via your browser you can log into your accounts. Even though the online wallets are relatively safe, we always recommend to have a local wallet which protects you better against attacks from outside. If you like to use a online wallet you can choose one of this links :
However, we always recommend to install a node or a wallet!