Resources and support is seldom, however, the community is continuing to grow. I don't see this being an issue moving forward.
I recommend that you spend a good deal of time planning out your data model. This is not a relational database technology and doesn't scale or model like one. If you are new to the Cassandra world, I highly suggest that you take a look at Thomas Hobbs' (thobbs) Cassandra Data Modeling Guide at: http://www.datastax.com/dev/blog/basic-rules-of-cassandra-data-modeling
I recommend that you read through your respective cassandra driver documentation. If you are a Python user, I recommend using Cassandra Driver (http://datastax.github.io/python-driver/index.html) - (delivered via pip), likewise if you're a Python and Django developer, you'll want to take a look at Django Cassandra Engine (https://github.com/r4fek/django-cassandra-engine), which uses Cassandra Driver to harness the full power of a Django back end. The Cassandra Driver used in Python now includes the CQLEngine developed by Jon Haddad (@rustyrazorblade), which acts as an ORM for Django. Simply going through the Data Modeling guide, the basic courses provided free of charge via the DataStax academy, the Cassandra Driver documentation, and the CQL Engine documentation will yield a well rounded understanding of the Cassandra architecture, basic data modeling and general development.
Be sure to check out Planet Cassandra for further articles and tutorials!