My dd22 just got married a week and a half ago. We tried to do most everything ourselves to save money. We spent the most on the venue and the photographer.
We got the do it yourself invitations at Michaels and printed them and put them together ourselves, we also got the do it yourself programs and made them ourselves. We used the 40-50 percent off coupons from Michaels on everything we bought there for the wedding.
My dd had an outdoor wedding, so no need for lots of flowers. The indoor flowers (hydrangias) we cut from a friends lake house (such a wonderful savings from a good friend) and put them in mason jars we borrowed from another friend and put them on a cut ring of a tree that fell in our yard a couple of weeks before. Tablecloths were borrowed from church. I asked for mini white lights to decorate the inside of the venue and friends donated tons of those too.
A friend from church made the cake/cupcakes for a teriffic deal. Five other friends from church made all the food. We did finger type foods instead of a sit down meal (saved a ton of money) and we bought everything at Sams. We also bought all the plates/cups etc. there. I had people raving about the food all night long, even asking for receipes

We had so many comments from the guest about how nice and intimate everything was. That made us so happy because we didnt want a huge formal show. We hit the target right on!
We made our own wedding favors. I bought up candy after Christmas and Valentines Day (dates were still good till Nov on the candy) and wrapped them in tuelle and tied a thank you on them.
We had about 160 guests there and spent about $500 on the food and drinks (no alcohol...we are not drinkers) and another $175 on the cake/cupcakes.
We also hired a DJ. That was nice to have him in charge of the music and all those things like introductions, garter/boquet toss, etc.
My sister did all the directing and did a super job at it! I couldnt have done it without her
I would say not to skimp on the photos. You only get one shot for those and things move so quickly so make sure you have someone who knows what they are doing.
That was the biggest undertaking I have ever taken part of. It was daunting, but if you have good friends to help it makes things easier. If no good friends want to take on that much planning and helping...definately fork out for a wedding planner/director!
Good luck to you!