Tell your friend thank you but your tank is't ready for fish, corals or anemones just yet. Start with the test kits I mentioned to you in the other thread you need PH, Ammonia, Nitrite and Nitrate. You will also need something to check the salt content of the water. There are two different devices to do this one is a Refractometer and the other is a Hydrometer. The Refractometer is much more accurate but you can make the Hydrometer work if necessary. I used one for years with my tanks back about 10 years or so ago. Just make sure there are no bubbles on the swing arm when you test with it. Also read in the link I gave you about the nitrogen cycle and what happens in the process. This way you will know when your tank is cycled and ready to start adding the clean up crew of snails and hermits. After that you can start to add one or two fish per month as to not overload the biological filter created by the nitrogen cycle that will consume fish waste and keep the water free of ammonia and nitrites.
Hopefully you can find someone to take the anemone and if not I pray that your tank has finished it's cycle and at least it will have a chance to live. Water parameters need to be stable and you will get practice with this doing water changes and doing your tests when you get them. Don't do anything fast, take your time and when you do a water change make sure the SG specific gravity of the water is the same as your main tank and also the same temperature. A good digital thermometer is very important also to make sure your water is at the right temperature. All of this is in the link I gave you in the other thread.
Good luck and if you need help don't hesitate to ask. Many people are here to help to make your tank a success.