Project will schedule autoscheduled task to start on the start date of the Project. If you need links - add them. If you have resources who are overallocated and want to use priority click Resources tab, set the leveling options, and then level the resources.

I also suggest taking a good course on Microsoft Project. It has a fair amount of complexity and getting someone who know the product well to walk you through the processes of building a schedule will save you hours of frustration.