I honestly don't have much experience with financial markets, trading etc but I'd like to learn. Is 0.1 Bitcoin too low to do anything with or what would be a suitable amount?
Regards Max
Hello and welcome to bitcointalk.org!
First off, you don't want to keep your own balance in an online wallet, do you? Get a wallet that suits your needs like Electrum, Multibit or Mycellium. Those wallets do not need to download the whole blockchain to function; these are lightweight wallets that are newbie-friendly and will help you familiarize yourself in buying/spending/receiving bitcoins.
As for trading, don't bother on trading yet. Better read the basics on trading first before you dive in to that aspect of bitcoin. 0.1 isn't a low amount in trading. Honestly, you can start off with even 0.005 if you want to. Don't go all-in unless you know what you're really doing.
Good luck!