When fishing Jigheads I more often that not use a uni knot to attach the jig. I find tying leaders and knots so easy these days its unreal and it takes so little time. Seeing as you are using a FC mainline you won't need to use a leader though.
A uni knot or rapala knot will do you and they are both easy to tie.
The only time I tend to use clips is when I am using casting jigs, spinners and small plugs.
I would highly recommend you learn to tie a dropshot rig, a Texas and Carolina rig also for your beginnings, these methods are an essential imo.