I learned how to split the syllables of words in a very creative way: I wrote poetry. The way I achieved this skill is rather simple, yet it took several evenings to master. I spent much of my time reading dictionaries and thesauruses, which have pronunciation guides, as you know. The key is to familiarize yourself with basic words. A useful tool may be dictionary.com . This site will help you recognize the stressed syllable and how many syllables are in each word. Most words have a free sound clips, which you can listen to. This might help you learn how to split up each word into syllables, yet it'll take some work.
I hope this helped.