Setting up my Lowrance Hook2 5

I'm wanting to set up my Hook2 5 it has the cart viewer, sonar, and downscan, but it doesn't have side image. What frequency would I run on sonar and down scan? I think the small number or the bigger number? I'm wanting to start vertical jigging. Should I set my speed on 2x? I fish from a kayak, don't have a boat yet can't afford on and no place to put one. When I look at my unit I see structure but I can not tell if its a brush pile or grass. any advice would be helpful. I hope to upgrade to another lowrance unit soon! Gonna get one with side scan.