Upgrading Acer Veriton M6610G

Hi, I just wondering if someone here can help me. i own acer veriton m6610g pc, i want to upgrading to a higher build. this is the specification from the store i known

OS Name    Microsoft Windows 7 Professional
Version    6.1.7601 Service Pack 1 Build 7601
OS Manufacturer    Microsoft Corporation
Graphic Card Amd Radeon HD 6570
Wlan TP-Link Wireless N Adapter
System Manufacturer    Acer
System Model    Veriton M6610G
System Type    X86-based PC
Processor    Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz, 3401 Mhz, 4 Core(s), 8 Logical Processor(s)
BIOS Version/Date    Acer P01-A4, 7/26/2011
SMBIOS Version    2.6
Boot Device    \Device\HarddiskVolume2 (not SSD)
Hardware Abstraction Layer    Version = "6.1.7601.17514"
Installed Physical Memory (RAM)    4.00 GB
Total Physical Memory    2.99 GB
Available Physical Memory    1.33 GB
Total Virtual Memory    5.97 GB
Available Virtual Memory    3.35 GB
Page File Space    2.99 GB

anyone can suggest what graphic card should i buy? How Many / Much Ram Can i Put Inside, 16gb or 32gb max? PSU that can support 1 ssd and 3 HDD ( i see 4 Slot ), Etc . . .

Hopefully Someone can kindly suggest me on how to upgrade my pc, Thank You So Much In Advance.

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markresking

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markresking

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DeeJee

Please don't moke me, i really don't know much about computer. You can call me amateur or whatsoever, all i know is digging information from the internet and i'm stuck. Too many information i don't understand regarding on how to upgrade my desktop, so i hope someone here in this community, can help me out, thank you.