HELP! Forms to my site... - Joomla! Forum - community, help and support

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hello everyone
1st, sorry english, i'm brazillian.
2nd need building site register , search informations in table
i downloaded joomla thinkin me this, i'm havins weird problems when installing components, think it's because of server (12gbfree.com, good? need free 1 more 5gb)

well, need know how website work.
1: need register system many forms, , support doc files in it
2: need edit system them
3: need upload/download system
4: 3 1st must protected users
5: need search system open see , download information

help?!






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