How to work with stargaze contracts

Hey, I have a few questions about the contracts and stargaze

### General:
- what each of the contracts does? when and how they will be used?
```ts
import { contracts } from 'stargazejs';

const {
BaseFactory,
BaseMinter,
Marketplace,
ReserveAuction,
SG721Base,
SG721MetadataOnchain,
Sg721Nt,
Sg721Updatable,
SgEthAirdrop,
Splits,
VendingFactory,
VendingMinter,
VendingMinterWlFlex,
Whitelist,
WhitelistFlex,
WhitelistImmutable,
} = contracts;

```
- how to fetch the image from IPFS link?
- how to get the collections that are in the minting stage?
- how to get all the NFTs of a user?
- most clients of the contracts require a contract address, how to get the contracts in the first place?
- how to broadcast messages?

### Mint NFTs:
- what contracts and methods are needed for minting NFTs?

### List NFTs:
- what contracts and methods are needed for listing NFTs?