January and February are the favorite months for pruning roses, although I sometimes prune mine in November or December. I expect to see buds breaking by late February. Except for climbers and tree or standard roses, pruning is quite simple. Pick the height you would like plants to start at and prune all branches down to that level. My preferred height is about 2 to 3 feet.
Shorter floribundas get pruned a little shorter. I do not try to make every branch on a plant the same length. Make cuts just above a leaf scar. Try to find a leaf scar facing in the direction you would like the new shoot to grow. Remove weak or broken branches back to their origin.
Standards and climbers need lighter, more selective pruning. Thin out some of the weaker growth and shape by shortening extra long branches. Plants which are taller than you want can be shortened.