Assistance in the development of the player. (Neverwinter Nights 2)

Hi all. To begin with, in an rpg of this class,as Neverwinter, I only played the Incredible adventures of Van Helsing. Before that mostly played shooters and racing. I hurriedly difficult to understand all the intricacies of the game (Newervinter nights 2). Yes, it's already 2017, the game came out 11 years ago. Just remembered about it (at the time, read Gambling), and decided to download/pass. According to the story thread, I deal with the robbers on the way to Neverwinter. Now I have the character paladin. Why then can't use spells. Under"Known spells they are. But to move them to panel Memorized spells does not work. Added some spells in the quick access toolbar, but they are not clickable. And then there's the problem-my character in combat, very reluctantly and rarely swings a sword(he is now the two-handed sword). Decided that it was not his class weapon, and hung his bow.
To try the changes did not, tired of losing the battle. My main character was not really fighting conjures. Unlike the companions (a dwarf and a girl with a tail). Gnome makes good opponents, the girl with the tail not far behind. + the girl knows how to pick locks. Tell me what spells and General tips on the game,this is not difficult.