Hi gardener Alf,
That would be good to keep in contact with yourself. A 176 visa is a state sponsorship, which means i must stay in the state (WA) for 2 years. Then after that i can move anywhere in Australia and apply for citizenship if i choose. the TRA (Trade Recognition Australia) are the people that i must send my skills and qualifications to be assessed to make sure i am capable and meet the required standard set by Australia. Some stuff on the forms is quite tricky so i would recommend an agent for it for that extra info.
The IELTS is the English test (don`t panic) that you have to sit, i sat it at my local university. it consists of four parts....reading,writing,listening and speaking. It`s a way the Australian government make sure that you can speak , understand and write English in the country.. i needed it with my type of visa, so i don`t know how it goes with other visas. I will pm you details of visa agents etc that you might need/want to know.