Before I begin I need to make some clarifications. "DAW" stands for Digital Audio Workstation. It does not mean the software itself (it's just one part of it). The term DAW is anything that works in the digital domain of audio from hardware to software. But since I'm talking about FL Studio, rather than trying to say "DAW Software" everytime, I'll just say DAW.

This thread is for FL Studio and anything related to FL Studio. It is great for midi sequencing as well as audio recording and editing (though, Adobe Audition is much better at dealing with audio than Edison, but there's always room for improvement). You can, if you wish, rewire FL Studio as a slave to another host say Reaper (in other words FL Studio is the subDAW inside the main (host) DAW). I heard this combo was good, but don't quote me on that; that notion is probably outdated. Nonetheless, FL Studio is a good standalone product.

FL Studio is a very intuitive DAW for beginners and pros alike. Learning curve is a lot less steeper compared to other DAWs. Very easy on your wallet and you also get lifetime updates. FL Studio has lots of support online. You may download the demo and try it out. Note: This is for PC only. No support for Mac.

FL Studio Homepage (http://flstudio.image-line.com/)

I recommend getting at least the Producer Edition because anything under that will lack audio support as well as envelope automation. A detailed comparison can be found here (http://flstudio.image-line.com/documents/features.html)

If you're a college student, you can get them at a much greater discount (I think it's US citizens only). $115 for the Producer Edition and $175 for the Signature Bundle.

If you have any questions about FL Studio, I'll help to the best of my knowledge.

Do I use one midi out per instrument or one per 8 instrument

When dealing with VSTi, you don't need to create a midi out channel. That's only used if you are communicating from FL Studio to some external controller (ie. your keyboard's sounds and midi events) or if the VST itself does not support communicating with external controllers.

I assume you have GPO added into your Step Sequencer by now. This VSTi will be contained inside a Fruity Wrapper. Down below is the plugin in a Cubase environment, but same concept.
http://www.traxmusic.org/TraXmusic_files/GPO/gpo.jpg
There are 8 slots you can add. Once you max it out, create another GPO channel in the Step Sequencer. This makes it less taxing on your computer. Also note the MOD wheel on the left side. This controls the expression (or volume if you want to call it that) of the instrument. If you want to do a Cresc. or Decresc. use that. I won't go into detail about controlling the MOD wheel in this post since it's off-topic to your question. If you have any further questions, I'll be happy to help.

Uh how do i add it into my step sequencer

1. In the Main Menu Bar, click Channels. Go to Add One > More...
2. In the lower right corner, Refresh > Fast Scan. Under VST plugins, look for something like GPO or along those lines. Enable it.
3. With the plugin enabled, repeat step 1, but instead of clicking "More..." look for GPO in the list. Click on it. It'll automatically load the VST plugin into the Step Sequencer.

Oh I already do that

Edit:i Get it now
U just put the 8 instuments in one port and start tha,m from channel 1-8 ;)