There are many things within the Second Life virtual world that require paying for. Such things include clothing, houses, vehicles, virtual land, pets and many more. There are however many products available that are free.
Basic membership is free although premium membership that is required to own Linden land incurs a monthly fee.
Almost anything
You can list your club or anything else you have on land in Second Life by using the about land options.
Lots of people think different things happen to you in your second life, some people do not even think that there is such thing as a second life. From my point of view you can become anything in your second life.
Cokeworld.
No you don't have to pay in order to play second life. There are a lot of places and things that you can do without spending any of the in game currency (lindens) and still enjoy the game.
As far as I know .... There is no possible way play Second Life without downloading a viewer
Difinetly,no second opinion.
Yes there is a charge for premium membership within Second Life. This can be paid monthly, quarterly, every 6 months or annually.
No, the basic game mode in Second Life is free. You will have to pay for a premium account or to buy new clothes, or change hair and skin tone colors if you want them. To get around this, create a pay pal account, but don't credit it. This allows you to get through sign up. Be ready to contact Second Life's creators if you have problems. They were very helpful when I had trouble signing up.
The Second Life viewer is not known to contain any virus's however it is demanding on a computers resources and can cause overheating.
Basic membership of Second Life is free to all users and this allows full access to the grid. If premium membership is needed then payment is required on a subscription basis.
Yes, to join Second Life is free for basic membership. You will only need to pay for premium membership if you wish to buy Linden mainland or a private estate.