Hi S.! Yea for you to try out cloth diapering! It isn't as scary as people think it is...and knowing you are doing a good thing for your baby and the environment is totally worth the extra work. I have learned a lot about cloth diapering over the past 6 months, so this may be a long message.
Everyone has their own opinion on which cloth diaper is best. There are so many different types of cloth diapers it can be a very overwhelming. One of the best things is to try several different types and then decide what you like. It also depends on how much money you want to spend. If you want to spend the least amount possible, you want to go with Chinese prefolds and diaper covers. You can spend more money on a nice diaper cover or two, or you can even use the cheap vinyl covers from Gerber.
If you don't mind spending a little extra money upfront then I would recommend using all in ones. They make cloth diapering so easy, and in the long run, it is still less money than using disposable diapers. Especially if you are planning on having more children in the future. My recommendation for a cloth all in one are Fuzzi Bunz pocket diapers. They have snaps, not Velcro (which can be annoying and wear out after a while). You can buy Fuzzi Bunz at Austin Baby Store, but if you are trying to save money you can buy them as seconds and on clearance at:
http://www.fuzzibunzonline.com/Seconds-and-Clearance_c_8....
Your 5 month old will wear a size medium. It is very unlikely you will ever need a size large for your baby, so these will last you until your baby is potty trained. You can also buy Fuzzi Bunz packages at:
http://www.fuzzibunzstore.com/Fuzzi-Bunz-Packages-p-1-c-7...
Washing: DO NOT USE "FREE AND CLEAR" detergent if you go with a fleece diaper like Fuzzi bunz. I learned that lesson the hard way. Also, if you choose to use Charlie's Soap, be careful to follow the directions very closely or your baby may end up with the worst rash you have ever seen. My choice of detergent is Country Save. Here is a website that gives you a run down on all the detergents:
http://www.diaperjungle.com/detergent-chart.html
I have 16 diapers and I do a load of wash every other day. Rinse first in cold then do a heavy duty cycle with hot water and a second rinse. I line dry my diapers outside. This saves energy, kills bacteria, and gets them super bright white. On cloudy days I dry them in the dryer on high for 60 minutes...except the Fuzzi Bunz covers say to dry on low...not sure why.
I use the Diaper Champ as my diaper pail. It is not perfect, but it works. I do not use a bag to line it as that can be very wasteful. Instead, every time I wash the diapers I clean the pail. You can also use a washable bag for your dirty diapers and then throw it in the wash with the diapers. The sell a very nice one at Austin Baby.
The down side to cloth diapers is dealing with poop. This can be a deal breaker for most people. You can buy liners that go in the diaper that make for an easy toss in the toilet, but I have used them and still have to rinse the diaper in the toilet because the poo isn't always solid. I will probably use these more when she is older and there is less of a messy poo.
It is not very fun, but since she poops only one or two out of 16 diapers, it isn't a big deal.
Wipes: I started using washable wipes! I figured since I was washing these diapers, why not just wash the wipes too! You can buy them, make them, or buy some inexpensive bath cloths from Target or Babies-r-us. (I got 6 for 2.99 at Target!) I just use water, but there are wipes solutions you can buy or make and keep at your changing table.
Out and about:
Many people choose to use disposables when you are not at home, but once you get the hang of it, it is not a big deal to use cloth diapers when you are outside of your home. Just remember to pack a bag to put the wet ones in! They sell biodegradable disposable bags at Austin Baby.
One other downside to using cloth diapers is Big Baby Butt. This makes it difficult to put some of those adorable outfits on. Buy a few hemp inserts for those days when you want your baby to wear those cute jeans. They make the diaper a lot less bulky!
My final piece of advice: Go to Austin Baby Store's Cloth Diapering 101 class. It is free and you will learn so much!
http://www.austinbabystore.com/AustinBaby2008/ClothDiaper...
Good luck and happy diapering! I hope this is helpful and if you have any questions, feel free to respond!
One more thing: If you choose to use cloth, do not use Desitin diaper rash cream (or any other regular diaper rash cream)...especially if you use a fleece diaper like Fuzzi Bunz or Bum Genius. This will eventually ruin your diapers and cause them to leak. (I also learned that one the hard way.) There are many other choices of diaper rash cream to use. I use Burt's Bees and LOVE it! Smells great and is parabin free! My daughter gets a little bit of rash after a poo and it goes away instantly with Burts Bees Diaper rash cream.