This is a first simple tutorial on using some of the methods of the SteemJS npm package via a REST API.
SteemJS is a Javascript API for the Steem Blockchain developed and maintained by 
- SteemJS : the library for JavaScript lovers
- SteemJS: Explore Steem blockchain! New update with full database API methods coverage
- Steem API: Now Released!
REST API Methods
Get Trending Tags
https://api.steemjs.com/getTrendingTags?afterTag=funny&limit=100
afterTag: tag name
limit: tags count
Get Block Header
https://api.steemjs.com/getBlockHeader?blockNum=68456
blockNum: block number
Get Block
https://api.steemjs.com/getBlock?blockNum=214
blockNum: block number
Get State
https://api.steemjs.com/getState?path=/trending/funny
or you can use a scope
https://api.steemjs.com/getState?path=/trending/funny&scope=content
path: specify path
scope: eg: content
Get Trending Categories
https://api.steemjs.com/getTrendingCategories?after=joomla&limit=100
after: category name
limit: categories count
Get Config
https://api.steemjs.com/getConfig
Get Dynamic Global Properties
https://api.steemjs.com/getDynamicGlobalProperties
Get Chain Properties
https://api.steemjs.com/getChainProperties
Get Feed History
https://api.steemjs.com/getFeedHistory
Get Current Median History Price
https://api.steemjs.com/getCurrentMedianHistoryPrice
Get Witness Schedule
https://api.steemjs.com/getWitnessSchedule
Get Hardfork Version
https://api.steemjs.com/getHardforkVersion
Get Next Scheduled Hardfork
https://api.steemjs.com/getNextScheduledHardfork
Get Accounts
https://api.steemjs.com/getAccounts?names[]=ned&names[]=joomla-tips
names[]: account name
Lookup Account Names
https://api.steemjs.com/lookupAccountNames?accountNames[]=dollarvigilante&accountNames[]=joomla-tips
accountNames[]: account name
Get Account Count
https://api.steemjs.com/getAccountCount
Get Conversion Requests
https://api.steemjs.com/getConversionRequests?accountName=dollarvigilante
accountName: account name
Get Order Book
https://api.steemjs.com/getOrderBook?limit=100
limit: orders count
Get Account Votes
https://api.steemjs.com/getAccountVotes?voter=ned
voter: voter name
Get Content
https://api.steemjs.com/getContent?author=dollarvigilante&permlink=could-steem-be-the-gateway-drug-to-mainstream-cryptocurrency-usage-and-the-end-of-central-banks-and-government
author: author name
permlink: post permlink