Save three routes with different purposes before departure
Prepare airport or station to accommodation, accommodation to campus, and campus to everyday shopping separately. The first must account for luggage and arrival time, the second for actual class hours, and the third for ordinary life. One city map does not represent those different conditions.
Choose transport products only after confirming eligibility and use
Student concessions, weekly tickets and monthly tickets can have school-proof, age, course-duration or application-time conditions. Check current Transport for Ireland information and operator rules first, then use the first week's actual travel record to judge whether a longer product is useful. Do not presume one card is cheapest for every short course.
Make housing work for early class, late class and disruption
Test candidate accommodation to an actual campus such as ATC for early class, late class and weekend. Record interchanges, final walking section, a fallback after service disruption and night-time comfort before comparing apparently similar room costs or transfers.
Plan intercity travel last so it does not take class time
Fix attendance, assessment and activity dates before considering rail, coach or overnight travel. Retain booking, change terms and return plan. If a long trip affects the next day's class, move it into a course gap or drop it instead of making the study plan carry irreversible transport cost.