They're both cordon varieties.
So yes, you support them with a nice sturdy bamboo stake and you pinch out the side shoots.
Are you ok about knowing what a side shoot looks like? The first year I grew toms (back in the dark ages), I enthusiastically began nipping off the new-forming flower trusses as well... :-[ Fortunately, my old dad put me right quickly enough that I didn't pinch out every potential tomato.
Side shoots are the fast-growing lateral (sideways-growing) stems which grow from the joint of the main stem and a leaf. Tomato flower trusses grow on their own, midway between leaves.
If the side shoots are big enough, you can grow these on as cuttings and make more tomatoes. :P Lots of peeps are doing that at the moment. ;D
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