Hello Quaristice! Thank you for playing our game and also for very valuable feedback :) We will definitely simplify the camera movement in a release version as we are aware that this kind of camera movement is a bit odd. Yes the tutorial should explain more, after training on training dummies or some monsters, when your strength bar is full you should use a bed at Doctor's house to apply the strength points then you will be able to carry more stuff with you. The shop not allows you to sell at the moment, selling is not implemented yet but it will be done in alpha version. Thank you again for showing the interest in the game :)