Try to set aside time every day for study, even if it's only a half-hour. Time put in is one of the things that makes the most difference.
I presume you have access to the uni library (and will also do so at graduate school) - what textbooks or other sources do they have going? Something that provides plenty of practice drills will help you with your conjugations.
Erin's Challenge, while aimed at a slightly younger age group, is good for beginners/false beginners.
Children's books are a good example of the sort of things people think should be easy, but are not for a second language learner (just think of Dr Seuss, or how people talk to young children). The type of vocabulary and grammar used are different - and unless you particularly enjoy reading kiddy books, it's not necessary to struggle through them. The same goes for anime - if you like watching it, fine, but it's full of dialect/slang/weird vocab/exaggerated speech patterns.
For katakana, just look at any Japanese website, they use it like it has an expiry date. Just from the front page of Rakuten (major shopping website): ランキング、オークション、クーポン、カード、トラベル、タブレットPC、ファッション、スポッツ、ペット、ゲーム、ギフト、バーゲン、セール、アカウント (All these are English derived terms which can be sounded out).
This is usually also the part where I say that non-fiction (particularly where the topic is something you're knowledgeable about in English) is a great practice source, advice that nobody ever seems to take. Watching an anime about cooking may be fun, but watching/reading a beginners guide on cooking is more likely to teach you both a) useful/standard language and b) how to actually make something. (substitute programming, photography, bicycle repair, etc, as you prefer).