- Choose topics of education. e.g. 'SEO', 'PHP'
- Create separate Twitter account for this purpose.
- Search Top 20 sites on Google for selected topics and follow them on Twitter
- Follow every retweeted post related to selected topics.
- Read tweeted links. If article was interesting, favorite it.
If you find this approach interesting, on Twitter you can create list of interesting and quality accounts.
But, if someone is spamming, remove that account immediately.