Can anyone tell me whether it is worth buying feminised seeds for £35?

I want a second generation in some way or another, so can this be acheived with all females, taking a cutting from my best plants?

Plus I don't have a clue about the sex of plants. I always thought they were asexual...if I were to have males and females growing in the same area, could someone advise me what risks are present (in terms of spoiling the crop) and their recommended precautions to counteract them? Do I even need males to enter the equation in order to harvest in the future, using just the basic 10 female seeds bought from the internet?

If males are anywhere near females they will pollinate them and this is NOT good, right?

When people say cuttings, do they basically just meant a branch of the plant cut off and stuck into a fresh pot?

Someone willing and divine please divulge their omniscient knowledge of this complex matter
White Widowmaker Reviewed by White Widowmaker on . Compact Fluorescent Light Discussion So here we go again pot fans. BlackJack Round 2. germinating 6 seeds directly in soil. For those that followed my last grow, enjoy. For those that are following it for the first time...Enjoy :) I'll keep ya updated as the weeks go by. Rating: 5