The absolute first thing you need to do is to clean out your hard drive and update everything. Video editing is going to need an unreasonable amount of space, so if you are using your standard hard drive you need to get rid of absolutely everything you don’t need. You may want to transfer it all onto a large portable hard drive for quick storage. Run disk cleanup functions, and even reformat if you have a lot of junk lingering. Defragging your computer is an absolute must. Make sure to upgrade all of the hardware and software drivers to the best of your ability. Make every effort to get more ram and update your video card. Make sure you check the recommended system requirements for the specific software you intend to install and make sure your computer either meets or beats them. Make sure to update your operating system to the absolute newest version available.