Last questions:
1. I installed the new electrum 2.8.2 and I can see a new feature that can be used for dynamic fees or something, right now it is in the middle of the bar and when I mouse over it shows "within 5 blocks, "0.00198728 BTC/Kb" is this enough for transactions or do I increase it? if increasing, what limit do I use?
The within 5 blocks means that Electrum estimates it to be confirmed within 5 blocks. Do you need it urgently?
The more you slide it to the right, the sooner it would get confirmed, assuming that the blocks are getting mined at a normal frequency.
Personally, I find within 2 blocks better for me.
2. I have an unconfirmed payment and the alert sign besides it, when I mouse over it says child pays for parents, I clicked child pays for parent , I get this 0.00089228 and I clicked next, then a message saying sign came up, am I supposed to click sign here?
Sorry for asking too many questions, these are all new features to me.
Child pay for parent basically means that the transaction that you are going to create is going to have a high fee to incentivise miners to mine your transaction. If you're okay with it, clicking sign and broadcast is going to create another transaction which sends it back to your wallet and the transaction is going to have a high fee. However, that fee will be used to "add on" to your fee you had in the unconfirmed parent.