Help Me Edit My Videos with HitFilm Express 4

I have been using Windows Movie Maker to perform very simple edits to videos. However, I got a new laptop and it does not have Movie Maker, so I have installed Hit Film Express 4 to edit my video. I am have a great deal of trouble. The audio and video are out of synch, even after I adjust them manually. I need to have a very easy way to edit my videos. I record very short videos every day and I cannot afford to spend 30 minutes editing a 2 minute video. I need you to tutor me / help me use HitFilm efficiently. 1. Synch audio and video quickly and easily 2. Trim video quickly and easily 3. Create transition between two videos 4. Add 'slides' (I used to create text slides in Movie Maker in seconds) Thank you.