Hi
is there a video tutorial that will show me step by step how to take my recorded tracks and make a finished piece with effects added and which is mixed so that it can be put onto CD or shared on Soundcloud.  I can record tracks but would like to learn how to take it to the next stage for instance taking a guitar and vocal based song and creating a finished product.
Thanks

Why not give this video by A.M.P. a go.
 

This is basically the entire process of music production (less the recording part.)  There are a lot of resources on the internet.  You might look at a free Coursera class called Intro to Music Production.  There are also some YouTube videos on how to produce music using a digital audio workstation (what Sonar is.)

Thanks for your help much appreciated.  I'll give these a try.

The video by A.M.P is very good.  He doesn't appear to have the follow up videos on his channel yet as I'd like to understand the mixing and mastering process once he's got everything down.  There are some really useful tips on the first video.  I've really enjoyed using Sonar Artist so far it's a very user friendly DAW.

gps
The video by A.M.P is very good.  He doesn't appear to have the follow up videos on his channel yet as I'd like to understand the mixing and mastering process once he's got everything down.  There are some really useful tips on the first video.  I've really enjoyed using Sonar Artist so far it's a very user friendly DAW.

Good start! And props on picking SONAR. I have licenses for more DAWs than I'd like to admit, but SONAR is home. And this forum is also better than the forums of the other DAWs I own.
 
One thing to consider...
 
SONAR Platinum looks expensive, but...
 
Until the end of the year, I believe, you get lifetime updates with a purchase. Good time of year to check for deals!
 
The reason I said "looks expensive" is its upfront cost. But SPlat (as most of us non-Bakers call SONAR Platinum) has very high end tools, both legacy and new, that are really very good. If you can avoid dreaded G.A.S. attacks (Gear Acquisition Syndrome), something I and many members of this forum suffer regularly, that'll be all the money you'll need to spend for, well, I would saw "a long time", but more realistically, it'll last you until you're accomplished enough with SPlat to start getting GAS attacks. Ha!
 
Here's a link to Andrew Byrne's first video. Once you get used to the accent, you learn a LOT! His videos rock! There are links to several of his other videos from the YouTube page linked to below. If you like his work, subscribe to his channel. He's already got a bunch of videos using SPlat already uploaded.
 

Thanks very much I will watch this video too

Yeah, Andrew's videos are very good.

Are you in the US? If so then check whether your region's library card gets you free access to Lynda.com because they have some excellent courses there on how to record and mix music.

If not then also check out Groove3.com - their monthly subscription is very reasonable and they have virtually everything you need to know about modern music production.

+1 for Groove3  Their Sonar specific library is a bit limited and some of the Cakewalk stuff is a bit dated, but their general videos on Compression, EQ and Reverb as well as specific Plugins (like Izotope's Ozone) are very well covered.