1. I think they look like the same.
2. in 新作资源 section, alway sel-ripped new CD sell in 2 month, if not sel-ripped, it allows in 1 month.
Other rare CD, or there are lossless that can't find in the Internet, these are allow to.
3. 贡献-point, other people send a topid to find some CD,DVD,BD in 求助专区 section,if you can give them the like thing send the topid in the right section, it can get it.
sel-ripped CD sell in 1 month, it can get 贡献-point, too.
In EX咖喱版 新作资源 section, sel-ripped CD can get 爱-point.
In EX咖喱版 section,you can send the topid with sel-ripped in any time,but your level(级别) must be 叙事曲 or higher, can see this section. 

2) you may only post vm23's album on 同人音乐

4) If the files weren't ripped by you , you should add the proof of each one……

If you want to post it  on 新作资源区,the album must be commercial ,not doujin , the album is  rare， nobody had posted it yet. Of course it must be your rip.
Maybe you want to get points of "爱"  , you should post something others to reach next level .Then you can post these albums on 咖喱版.