First of all, I would like to say that English is not my mother tongue and I would like to apologize in advance for bad grammar.

I am new to the "Bitcoin-world" and I have made the first steps with the Electrum wallet.

After some transfers there is balance/amount which i can´t use, its around 0.003 BTC. It´s exactly the amount which is splited in different amounts in my "change addresses" under "used" and there is everywhere a "1" behind every address with the amount in the "TX" column ( i hope you can understand what I mean, I don't know how to explain it right  ).

After some research in the Web I understood that these addresses have my change from my transactions or something like this...

My question is how can I use these BTC from these addresses?
(And why is the amount shown in my balance when I can't use these BTC?)

Thanks for reading and thanks for any responses