IRIS - Types of Information

I need to identify different 'types' of information, each is bit different
1 web sites are a 'source' form of info. but some sites have valuable info, some little or none.
2 if the sources need to come from other than web, the web can still be used as a 'tool' to find them
3 alot of info. can be gleaned from web source, i.e.
overview of/skim topic generally, find info re companies, find expert opinions, popular opinions, find book catalogs, access media content and sources, etc.
4 using web 'bookmarks' a good organizational tool when doing research
5 broadcast media can be a source for current events and help me stay informed
6 this source should always remain 'up for questions', regarding validity and truthfulnes, factual
7 newspapers/periodicals can be a source for info on lots of topics, usually only a starting point though, but these sources do give some good opposing viewpoints usually.
8 as far as magazines are concerned, i consider them as quick 'dessert' type reading while waiting line situations, but they do provide some good 'website' suggestions for further look into a subject
9 "Scholarly" journals are definitely my favorite source for researching and writing papers. The info is usually quite solid, informative, within context, both historical and current, and sometimes opinionated. in addition the citations are readily available. also can point to new sources.
10 following the lead of this tutorial i..."will probably be looking for books that synthesize all the information on one topic to support a particular argument or thesis." (IRIS) a digital format helps for 'fast' skim reading, using the table of contents, etc.
11 good tip .... borrowing books from my library, instead of buying.
12 using 'reference' books can be good for gathering facts and statistics for a subject, though more of a chore to use (not exciting reading) but my favorites still remain the dictionary/thesaurus combo