Thanks for all to suggest me some points i will try it and let see how much traffic increase on my site tradeshowszone.com

It will take some time for your website to rank but before that you need to do lot of tedious work which can be better done by SEO professionals. I would suggest you to hire some SEO guys and do that for you because it will become difficult for you to handle it all alone. As you told before that you do'nt have much budget but for results you need to spend money.

The most important thing is blog posting,forums and blog commenting as google most frequently visit these sites.

1: Use Keywords
2: Use Trends
3: Add yourself to google

SEO is helps to get rank in each search engines. In SEO link building is very important for getting rank.

If you really want to increase your website page's rank quickly then you need to contact freelancers on webs, there are many webs where you can buy services of freelancers to increase web's rank but I think SEOclerks is better.

Find keywords that will help you maximize your website's viewership.
You can use google trends to predict spikes and slumps as well as to know when you should update and change pages for the season or switch to using different keywords.
Target niche keywords with low competition.
Try to offer valuable information or tools so that other people are motivated to link to your site. This will increase the chances of natural backlinks.

Firestly optimize your website for SEO by doing following things:
In Onpage SEO - Check content, headings, alt, internal linking, link-structure, sitemap, robots.txt
In Offpage SEO - Find some good quality of social bookmarking sites, directory, forums, blogs, press release, classifieds, social sharing which will help you in driving traffic and improve in keywords ranking.