Be An Actuary - Bookmark this site! This has pretty much anything you need to know if you are considering the actuarial profession.
Society of Actuaries
Casualty Actuarial Society
Actuarial-Lookup - Exam Analytics
DW Simpson - Actuarial Salary Survey
Ezra Penland - Actuarial Salary Survey
Actuarial Journey - I recently came across this site and I think some of the podcasts are very informative and helpful to those starting out
Actuarial Talent: Findings from an EIU Study, December 2014 (listen to this podcast for a discussion on the results of this finding)
The Top Five Skills Every Actuary Needs, May 2015
Q&A What's it Like Having the Best Job of 2015?, April 2015
What are Actuarial Skills?, November 2015
Technical Skills Resources
Excel, VBA, SAS, and SQL are the most common technical skills sought after for actuarial roles. Below are some great sites to become familiar with these programs/programming languages.
TIA - Technical Skills Course - I signed up for this course when I was applying for entry-level positions because I found it covered a lot of the basics and really keys in on how these skills are used in the actuarial industry. They offer a student discount, too.
SQL Tutorial - This is probably the best site to learn a lot of the basics for free.
SAS Tutorial - I like this tutorial because there are a lot of screenshots (and it's free).
Excel VBA Programming - A free guide to help learn the basics of VBA.
222 Excel Keyboard Shortcuts - Most of your work will probably be in excel, so familiar yourself with a lot of shortcuts to get your work done faster. Also, make sure you know how to create pivot tables, use a v-lookup and other various functions.
Actuarial Outpost - Some people can be really intense, but this forum is a really great way to find answers to questions you may have and get additional insight on exams and the profession.
LinkedIn is also a really great way to connect with professionals already in the field and have your questions answered. Two of my favorite groups are Actuary Network and The Entry-Level Actuary.
Coaching Actuaries - ADAPT is one of my favorite study tools for the preliminary exams (used for FM, MFE), you can also see a blog post I wrote for their site here
ASM Study Manuals - I've only ever used ASM manuals, but they are definitely very thorough with lots of practice problems (P, FM, MFE)
The Infinite Actuary - I have a hard time learning from videos, but throwing this up here since I know a lot of people who have successfully used this resource.
These are the resources I've found to be the most helpful on the preliminary exams.
Actuarial Interview Tips
Common Interview Questions: Prep (Actuarial Outpost)
Eight Tips for a Successful Interview (SOA)
Actuary Interview Questions (Glassdoor)
Interview Questions & Tips (Actuary.com)
Interview Questions that Actuaries Will Almost Always Encounter
Preparation for Interview for Beginning Actuaries
Actuarial Interview Preparation
List of 99 Interview Questions Asked to Actuarial Candidates